Mobility of Bloch walls via the collective coordinate method

Autores
Desposito, Marcelo Arnaldo; Villares Ferrer, A.; Caldeira, A. O.; Castro Neto, A. H.
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have studied the problem of the dissipative motion of Bloch walls considering a totally anisotropic one-dimensional spin chain in the presence of a magnetic field. Using the so-called “collective coordinate method” we construct an effective Hamiltonian for the Bloch wall coupled to the magnetic excitations of the system. It allows us to analyze the Brownian motion of the wall in terms of the reflection coefficient of the effective potential felt by the excitations due to the existence of the wall. We find that for finite values of the external field the wall mobility is also finite. The spectrum of the potential at large fields is investigated and the dependence of the damping constant on temperature is evaluated. As a result we find the temperature and magnetic-field dependence of the wall mobility. © 2000 The American Physical Society.
Fil: Desposito, Marcelo Arnaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Villares Ferrer, A.. Universidade Estadual de Campinas; Brasil
Fil: Caldeira, A. O.. Universidade Estadual de Campinas; Brasil
Fil: Castro Neto, A. H.. University of California; Estados Unidos
Materia
Bloch Walls
Ferromagnets
Quantum Dissipative System
Collective Coordinate Method
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/54420
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Mobility of Bloch walls via the collective coordinate methodDesposito, Marcelo ArnaldoVillares Ferrer, A.Caldeira, A. O.Castro Neto, A. H.Bloch WallsFerromagnetsQuantum Dissipative SystemCollective Coordinate Methodhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We have studied the problem of the dissipative motion of Bloch walls considering a totally anisotropic one-dimensional spin chain in the presence of a magnetic field. Using the so-called “collective coordinate method” we construct an effective Hamiltonian for the Bloch wall coupled to the magnetic excitations of the system. It allows us to analyze the Brownian motion of the wall in terms of the reflection coefficient of the effective potential felt by the excitations due to the existence of the wall. We find that for finite values of the external field the wall mobility is also finite. The spectrum of the potential at large fields is investigated and the dependence of the damping constant on temperature is evaluated. As a result we find the temperature and magnetic-field dependence of the wall mobility. © 2000 The American Physical Society.Fil: Desposito, Marcelo Arnaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Villares Ferrer, A.. Universidade Estadual de Campinas; BrasilFil: Caldeira, A. O.. Universidade Estadual de Campinas; BrasilFil: Castro Neto, A. H.. University of California; Estados UnidosAmerican Physical Society2000-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54420Desposito, Marcelo Arnaldo; Villares Ferrer, A.; Caldeira, A. O.; Castro Neto, A. H.; Mobility of Bloch walls via the collective coordinate method; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 62; 2; 7-2000; 919-9271098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://link.aps.org/abstract/PRB/v62/p919info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.62.919info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:42:33Zoai:ri.conicet.gov.ar:11336/54420instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:42:34.225CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mobility of Bloch walls via the collective coordinate method
title Mobility of Bloch walls via the collective coordinate method
spellingShingle Mobility of Bloch walls via the collective coordinate method
Desposito, Marcelo Arnaldo
Bloch Walls
Ferromagnets
Quantum Dissipative System
Collective Coordinate Method
title_short Mobility of Bloch walls via the collective coordinate method
title_full Mobility of Bloch walls via the collective coordinate method
title_fullStr Mobility of Bloch walls via the collective coordinate method
title_full_unstemmed Mobility of Bloch walls via the collective coordinate method
title_sort Mobility of Bloch walls via the collective coordinate method
dc.creator.none.fl_str_mv Desposito, Marcelo Arnaldo
Villares Ferrer, A.
Caldeira, A. O.
Castro Neto, A. H.
author Desposito, Marcelo Arnaldo
author_facet Desposito, Marcelo Arnaldo
Villares Ferrer, A.
Caldeira, A. O.
Castro Neto, A. H.
author_role author
author2 Villares Ferrer, A.
Caldeira, A. O.
Castro Neto, A. H.
author2_role author
author
author
dc.subject.none.fl_str_mv Bloch Walls
Ferromagnets
Quantum Dissipative System
Collective Coordinate Method
topic Bloch Walls
Ferromagnets
Quantum Dissipative System
Collective Coordinate Method
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We have studied the problem of the dissipative motion of Bloch walls considering a totally anisotropic one-dimensional spin chain in the presence of a magnetic field. Using the so-called “collective coordinate method” we construct an effective Hamiltonian for the Bloch wall coupled to the magnetic excitations of the system. It allows us to analyze the Brownian motion of the wall in terms of the reflection coefficient of the effective potential felt by the excitations due to the existence of the wall. We find that for finite values of the external field the wall mobility is also finite. The spectrum of the potential at large fields is investigated and the dependence of the damping constant on temperature is evaluated. As a result we find the temperature and magnetic-field dependence of the wall mobility. © 2000 The American Physical Society.
Fil: Desposito, Marcelo Arnaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Villares Ferrer, A.. Universidade Estadual de Campinas; Brasil
Fil: Caldeira, A. O.. Universidade Estadual de Campinas; Brasil
Fil: Castro Neto, A. H.. University of California; Estados Unidos
description We have studied the problem of the dissipative motion of Bloch walls considering a totally anisotropic one-dimensional spin chain in the presence of a magnetic field. Using the so-called “collective coordinate method” we construct an effective Hamiltonian for the Bloch wall coupled to the magnetic excitations of the system. It allows us to analyze the Brownian motion of the wall in terms of the reflection coefficient of the effective potential felt by the excitations due to the existence of the wall. We find that for finite values of the external field the wall mobility is also finite. The spectrum of the potential at large fields is investigated and the dependence of the damping constant on temperature is evaluated. As a result we find the temperature and magnetic-field dependence of the wall mobility. © 2000 The American Physical Society.
publishDate 2000
dc.date.none.fl_str_mv 2000-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/54420
Desposito, Marcelo Arnaldo; Villares Ferrer, A.; Caldeira, A. O.; Castro Neto, A. H.; Mobility of Bloch walls via the collective coordinate method; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 62; 2; 7-2000; 919-927
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/54420
identifier_str_mv Desposito, Marcelo Arnaldo; Villares Ferrer, A.; Caldeira, A. O.; Castro Neto, A. H.; Mobility of Bloch walls via the collective coordinate method; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 62; 2; 7-2000; 919-927
1098-0121
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.aps.org/abstract/PRB/v62/p919
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.62.919
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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